One is a nearly stationary area of low pressure that extends from southeastern Mexico into the northwestern Caribbean. As of 2 p.m. on Thursday, forecasters gave it a 10 percent chance of developing and noted it could bring heavy rain to Mexico and Central America.

The other is a low-pressure area a couple hundred miles northeast of the Bahamas, moving northeast at 15 to 20 mph. It was given a 30 percent chance of developing over the next two days.